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. 2022 Jan;19(1):135-139.
doi: 10.1513/AnnalsATS.202010-1317RL.

Air Trapping versus Atelectasis in Obesity: Relationship to Late-Onset Nonallergic Asthma and Aging

Swati A Bhatawadekar  1 , Ubong Peters  1 , Ryan R Walsh  1 , Nirav Daphtary  1 , Erick S MacLean  1 , Kevin Hodgdon  1 , C Matthew Kinsey  1 , David A Kaminsky  1 , Jason H T Bates  1 , Anne E Dixon  1
Affiliations

Air Trapping versus Atelectasis in Obesity: Relationship to Late-Onset Nonallergic Asthma and Aging

Swati A Bhatawadekar et al. Ann Am Thorac Soc. 2022 Jan.
No abstract available

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Figures

Figure 1.
Figure 1.
(A) Atelectasis represented by HAA% in the four groups at residual volume (RV), defined as the percentage of lung voxels having attenuation between −600 and −250 Hounsfield units (HU). (B) Air trapping represented by LAA% in the four groups at RV, defined as the percentage of lung voxels with attenuation less than −856 HU. (C) MLA in the four groups at RV. P < 0.05 indicate significant pairwise comparisons with values adjusted by Bonferroni correction after Kruskal-Wallis test; solid horizontal lines indicate median. HAA = high attenuation areas; LA = lean asthma (squares); LAA = low attenuation areas; LC = lean control (circles); LONA = late-onset nonallergic (diamonds, obese asthma group); MLA = mean lung attenuation; OC = obese control (triangles).
Figure 2.
Figure 2.
(A) Changes in atelectasis (HAA%) from functional residual capacity (FRC) to residual volume (RV). (B) Changes in air trapping (LAA%) from FRC to RV. P < 0.05 indicate significant pairwise comparisons with values adjusted by Bonferroni correction after Kruskal-Wallis test; solid horizontal lines indicate median. HAA = high attenuation areas; LA = lean asthma (squares); LAA = low attenuation areas; LC = lean control (circles); LONA = late-onset nonallergic (diamonds, obese asthma group); OC = obese control (triangles).
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